Machine for treating prewelt uppers



Oct 16, 1951 R. E. DuPLEssls ETAL 2,571,123

4 MACHINE FOR TREATING PREWELT UPPERS Filed Oct. 21, 1950 I 2Sheets-Sheet 1 60 12222912 tors Rene E Dupless is #0 Edward Quinn 06L1951 R. E. DUPLESSIS ETAL 2,571,123

I MACHINE FOR TREATING PREWELT UPPERS Filed Oct. 21, 1950 2 Sheets-Sheet2 Patented Oct. 16, 1951 MACHINE FOR TREATING PREWELT UPPERS Ren E.Duplessis, Beverly, andEdward Quinn,

Saugus, Mass., assignors to United Shoe Machinery Corporation,'Flemington, N. J a corporation of New Jersey Application October 21,1950, Serial No. 191,470

' This invention relates to a machine for treating prewelt uppers and isof the type illustrated in Letters Patent of the United States2,238,922, granted April 22, 1941, upon the application of y W. A.Wheaton.

The principal object of the invention is to provide an improved machineby means of which the angular relation of the welt to the outside of theupper of a prewelt shoe may be more deflnitely determined prior to-theforming and lasting operations.

In the preparation of prewelt uppers it is desired to straighten thewelt so as to separate it from the outer surface of the upper adjacentthereto and this has been accomplished satisfactorily, simultaneouslywith the application of cement to the welt, by means of the machineillustrated in the above-mentioned patent. It -is found, however, thatan even more useful relation of the welt to the upper may be obtained inthis preliminary operation if the inner margin of the welt inside theattaching seam is broken down and is caused to bend inwardly toward thebottom opening. When this is accomplished, less difficulty isexperienced in the forming operation where a welt margin projectingoutside of the plane of the bottom of the shoe upper along its innerperiphery is apt to be caught by the wipers to such an extent that theadjacent portion of the upper is dragged over the bottom of the supportwith a resulting distortion of this part of the shoe.

Accordingly, an important feature of the invention resides in animproved arrangement for bending this inner Welt margin inwardlyincluding a cementing roll which, as illustrated, has a frusto-conicalouter end portion overhanging the end face of the recessed supportingroll of the Wheaton machine and over a disk-like molding member to bedescribed. This frusto-conical portion contacts with the inner margin ofthe welt and bends it definitely toward the opening of the shoe upper.

Still another feature of the invention resides in the employment of adisk-like molding member which engages the inside of the upper to urgeit against the flange of the recessed supporting roll and to bend thewelt into the corner between the cylindrical portion and the conicalportion of the cement roll. By mounting this disk on an axis extendingdown and to the rear,

it is more efiective to urge the work toward the flanged periphery ofthe supporting roll.

'To facilitate the introduction of the work and .to. enable a readyadjustmentof the .position 12 Claims. I (or 12- 51) '2 of the moldingdisk in and out as well as up and down, it i rotatable on a carrierpivotally mounted upon a swingable hanger, these two members beingspring urged in one direction so that an extension of the carrierengages a screw upon a bearing arm for the supporting roll. The latterroll is adapted to be displaced downwardly by a treadle to permit thework to be inserted or removed. As a result of the above constructionthe operation of a single treadle is efiective to displace thesupporting roll and to swing the disk carrier to permit the welt to beintroduced between the two rolls and the upper between said rolls andthe disk.

These and other features of the invention will best be understood from aconsideration of the following description taken in connection with theaccompanying drawing, in which Fig. 1 is a plan view of the operatingparts of the machine;

Fig. 2 is an end view thereof with parts broken away and in section;

Fig. 3 is a detail view of the guard shields;

Fig. 4 is a view in plan, on a larger scale, with parts broken away toshow the guide finger which engages the inner edge of the welt; and

' Fig. 5 is a side elevation on the scale of Fig. 4 and with partsbroken away to show the members which carry the molding disk, withprovision for adjustment in various directions.

The machine is intended for the treatment of a prewelt shoe upper Uwhich may be lined and has a welt W attached thereto by stitches alonga' seam s. These work parts are introduced into the machine so that theupper U lies in a recess I 0 of a supporting roll [2 while the outermargin of the welt W is gripped between the periphery of the roll l2 andthe cylindricalportion of a cement roll I 4. This cement roll has afrusto-conical portion it which bears upon the inner margin of the weltinside the seam. The work i held in this position by various guides, tobe described, acting in cooperation with a guide finger I8 which rests,as seen in these figures, against the inner periphery of the weltadjacent to the end face of the frusto conical portion of the cementingroll thus causing the peripheral flange 22 of the supporting roll tostraighten the welt and separate it from the outside of the upper. Themachine is made of the supporting roll I2 and breaking down the welt byforcing it into the bend between the cylindrical and conical portions ofthe cementing roll.

The supporting roll I2 is mounted on the end of a driven'shaft 24 whichis journaled ina pivoted bearing arm 26 pivotally mounted on a frame 30.The general structure of the machine is substantially like that of themachine shown in Letters Patent of the United States No. 1,851,162,granted March 29, 1932, on an application of J. W. Cosgrove. As in thatmachine, cement is supplied to the cementing roll I4 from a trough 32 bymeans of a pick-up roll 34 and a transfer roll 36, the quantity ofcement being determined by a doctor roll 38. These rolls are mounted onparallel shafts driven in the directions indicated by arrows in Fig. 2,by power supplied through a pulley 3'8 driven by a belt 39. Althoughcement is supplied directly only to the cylindrical portion I4 of thecementing roll, a suflicient portion is transferred by gravity andcentrifugal force to the frusto-conical portion I6 during those timeswhen no work is being presented to the machine.

Cooperating with the outer periphery of the welt to maintain its desiredrelationship to the treating rolls is a gage 40 having two portionswhich contact the welt. This gage is adjustably mounted on an extensionof a plate 43 attached to the side of the arm 26 (Fig. 3) and is held onthe extension by means of a clamp screw 42 passing'through a slot in thegage. The plate 43 has a forked end 45 (Figs. 4 and received in a groovein the hub of the supporting roll I2 to determine its axial position.Another guiding member has a tapered end portion 44 as shown in Fig. 2to bring it close to the bite of the rolls and is adjustably positionedon the arm 26 by means of the clamping screws 46 passing through itssupporting arm 4'! as shown in Figs. 4 and 5. Still further tofacilitate the presentation of work to the machine and prevent it frombeing caught in the operating parts are combined guides and shields 48and 50 which are adjustably supported upon the end portion of a rigidarm 52. This arm 52 has a rib andgroove connection 54 (Fig. 1) to theframe 3|] and is held there by a screw 56 (Fig. 2)

The arm 52 is also used for supporting a, block 58 (Fig. 1) which isheld thereon'by screws 59 passing through slots in the block. The outerend of the block 58 is slotted to receive an arm 60 integral with theguide finger I8 and held in the forked position by a; pivot pin'62. Theside of the block has an overhanging portion 64 (Figs. 3 and 4) in whichthere is a stop screw-6B for positioning the guide finger I8, the armbeing held against the stopscrew 66 byastiif spring 68;

An adjustable support for the molding disk 20 consists first of a hanger'10 forked at its right hand end as viewed from above in Fig. 1 tosurround the outer-end of the block 58, on which it is supported bymeans of a pivot pin 12. The block58 has at its forward end near theoperator an upstanding lug 14 against which there rests a screw IE,threaded in an end portion of the hanger I0 and held against the lug I4by means of a spring is attached at its inner end to a pin :80 on theblock 58. A leftendof this hanger as viewed in Fig. 1, is provided witha depending portion 82 which receives a pivot stud 84- passing through aforked portion of a. carrier- 86 which aninward extension 88 resting onthe upper endof a vertical stopscrewsjl. I

.down and to the rear with respect to the bite of the rolls and thedirection of movement of the work. Thus the work-contacting part of thedisk moves forwardly and inwardly and urges the work with it against theflange 22. The extension 88 on this carrier 86 is held against the stopscrew 90 by means of a spring 96 extending between a vertical arm '98 onthe carrier 86 and the pin on the block 58 (Fig. 1).

The welt W extending around the upper is necessarily jointed. This jointpreferably is made by scarilng the overlapping ends. If it is doneimperfectly, however, there may be a tend ency for the welt joint to jambetween the gripping rolls and to stop the normal progress of the work.Offsetting any such tendency is an arrangement for yieldably supportingthe vertical stop screw comprising a block I00 pivotally supported onthe pivoted arm 26 at I02 and held up by a stiff spring I04.

When the operator desires to introduce a piece of work in the machine,which work comprises a closed upper U having stitched to its peripheryan endless Welt W, it is only necessary for him to depress a treadleconnected to a treadle rod I I0 which is joined at its upper end to a.hook II 2 which is threaded in the arm 26, thus lowering this arm andthe recessed supporting roll I2 carried on the outer end of the shaftjournaled therein. Accompanying this action will be a downward movementof the vertical stop screw 90, thus allowing the carrier 86 to swing onits pivot 84 as the extension 88 descends in-contact with the upper endof the screw 90 and is held there by the tension of the spring 96.

The operator will then slip the welt'W between the cementing roll I4 andthe supporting roll I2, raising it into position inside the end-of theguiding and retaining finger I8. As the treadle is released the moldingdisk 25 will be swung into engagement with the inside of the work toraise the welt into contact with the two surfaces of the cementing roll.The work will then be carried forward substantially automatically totraverse the welt in a counterclockwise dirgclzion indicated by thearrow I20 in Figs. 2 an As the traversing of the work is completed, thetreadle attached to the rod H 0 will again 'be depressed by theoperator, releasing the work from between the supporting roll I2, themolding'disk 2ll and the cementing roll I4. By this action the welt willhave been coated with cement and separated from the upper at its outermargin while at the same time the inner margin of the welt will have'been broken down to such an extent that it either bends inwardlytoward: the inside of the upper or is at least substantially flat withthe outer portion of the welt.

Having thus described our invention, what we claim-as new anddesi-re tosecure by Letters Patent of the United States is:

1. In a machine for operating on prewelt shoe uppers, a supporting rollhaving a recessed'e'nd face vto provide :a welt-.crease-enteringperipheml flange, a roll for gripping the welt against the periphery ofsaid supporting roll, means for driving one of said rolls to carry thewelt through the machine, a molding disk having its periphery inengagement with the inside of the upper near the periphery of thesupporting roll, and means for supporting said disk for rotation upon anaxis extending downwardly and rearwardiy with respect to the directionof movement of the welt.

2. In a machine for operating on prewelt shoe uppers, coacting rolls forgripping the welt, means for driving one of said rolls to draw the workthrough the machine, a frusto-conical molding disk coacting with one ofthe rolls to push the upper away from the welt, and a pivoted hanger,for supporting said molding disk, mounted for adjustment in and out withrespect to the bite of the rolls.

3. In a machine for oi erating on prewelt shoe uppers, coacting rollsfor gripping the welt, means for driving one of said rolls to draw thework through the machine, a molding member coacting with one of therolls to push the upper away from the welt, and means for supportingsaid molding member mounted for adjustment up and down with respect tothe bite of the rolls.

4. In a machine for operating on prewelt shoe uppers, coactin rolls forgripping the welt, means for driving one of said rolls to draw the workthrough the machine, a molding member coasting with one of the rolls topush the upper away from the welt, and means for supporting said moldingmember mounted for adjustment for both in-and-out and up-and-downmovement with respect to the bite of the rolls.

5. In a machine for operating on prewelt shoe uppers, a roll having anend face recessed to provide a peripheral flange, a eoacting roll forgripping the welt against the periphery of the first roll, a moldingmember supported for engagement with the inside of the shoe upper ajacent to the periphery of the first roll, and means for bending theinner margin of the welt toward the inside of the shoe upper.

6. In a machine for operating on prewelt shoe uppers, a supporting rollhaving a welt-creaseentering peripheral flange, a coacting roll gripping the welt against said first roll and having a frusto-conical,enlarged end portion bearing against the inner margin of the welt, and amolding member coacting with the inside of the shoe adjacent to theperiphery of the supporting roll.

'7. In a machine for operating on prewelt shoe uppers, a supporting rollhaving a welt-creaseentering peripheral flange, a coacting roll having afrusto-conical, enlarged end portion bearing against the inner margin ofthe welt while the outstanding portion of the welt is gripped betweensaid rolls, a molding member coacting with the inside of the shoeadjacent to the periphery of the supporting roll, and means forsupplying cement to the periphery of the coacting roll.

8. In a machine for operating on prewelt shoe uppers, a supporting rollhaving a welt-creaseentering peripheral flange, a coacting roll having afrusto-conical, enlarged end portion bearing against the inner margin ofthe welt while the outstanding portion of the welt is gripped betweensaid rolls, and a guide finger engaging the inner edge of theweltadjacent to the periphery of the irusto-conical portion of thecoacting roll.

9. In a machine for operating on prewelt shoe uppers, a frame, an upperroll mounted on a shaft journaled in said frame, an arm pivoted to theframe, a lower roll mounted on a shaft journaled in said pivoted arm,operator-controlled means for displacing said arm to facilitate theadmission or work between the rolls, a molding member coacting with theinside of the upper adjacent to the bite of the rolls, a carriersupporting said molding member, means :for pivotally supporting saidcarrier, a stop on the operator controlled arm, an extension on thecarrier, said extension being spring-urged against said stop whereby thedepression of the arm carrying the supporting roll is eiiective to swingthe molding member away from the grip of the rolls.

10. In a machine for operating on prewelt shoe uppers, a frame, acement-applying roll journaled in said frame, means for supplying cementto the periphery of said roll, a coacting welt-gripping, supporting rollhaving a welt-crease-entering peripheral flange, a molding disk coactingwith the inside of the upper to press the work against the flange, meansincluding a pivot for supporting said disk, an extension on said meansengaging said arm, and a spring holding said extension in engagementwith the arm whereby displacement of the arm to position a piece of workbetween the rolls is effective to swing the disk out of grippingrelation thereby permitting the work to be positioned between said diskand the bite of the rolls.

11. In a machine for operating on prewelt shoe uppers, coactingwelt-gripping rolls, a molding member engaging the inside of the upperadjacent to the bite of the rolls, and means for supporting said moldingmember comprising a hanger pivotally mounted on the machine and having astop-screw, spring held against a rigid member, a carrier pivoted on thehanger and having an extension engaging another stop screw, and a springfor holding said extension against the latter screw, whereby adjustmentof said screws will determine the position of the molding member in andout with respect to the bite of the rolls and up and down with respectthereto.

12. In a machine for operating on prewelt shoe uppers, a frame, coactingwelt-gripping rolls, a molding member engaging the inside of the upperadjacent to the bite of the rolls, a member rigid- 1y mounted on theframe, means for supporting said molding member comprising a hangerpivotaly mounted on the machine, a carrier pivoted on the hanger, saidhanger having a stop screw, spring held against said rigid member,another stop screw, said carrier having an extension engaging the latterstop screw, a spring holding said extension against the latter screw,and 0D- erator-controlled means for displacing one of the rolls to admitthe Work effective also to permit the spring-urged carrier for themolding member to be swung around its pivot away from the bite of therolls;

RENE E. DUPLESSIS.

EDWARD QUINN.

No references cited.

